Granted Patent
Utility
US 3,975,506 · App. 05/576,439
Production of chlorine dioxide
Inventor:
Gerald Cowley
Patented Case
View Patent ↗
Granted: Aug 17, 1976
Filed: May 12, 1975
Inventor
Gerald Cowley
Assignee (at issue)
ERCO Industries Limited
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.